Question

How to find 2π is rational or irrational number?

Answer 1

You need to be familiar with the  properties for this. As you know that pi is irrational.

There is one property which says:if an irrational number is being multiplied with a rational number then the resultant is always irrational.

Another can be:As pi has a  non terminating and non repeating decimal expansion therefore if it is multiplied with any rational number which is 2 in this case. 

The answer will always be irrational.

Answer 2

Answer:

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Step-by-step explanation:

2π is always a rational number as 22/7×2=44/7 which is not satisfied with a rational number i. e endless